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biochem103

Lipids

QuestionAnswer
What compound is used to synthesize cholesterol? Acetyl CoA
Where is cholesterol made? Liver
Where is excess cholesterol not needed by the body transported? Gall bladder
Excess cholesterol might accidentally precipitate out as what? Gall Stones
What steroid hormone regulates Na+ and K+ ions and promotes water retention? Aldosterone
What steroid hormone regulates the conversion of proteins to carbohydrates? Cortisone
What is the emulsifier found in egg yolks called? Lecithin
What kinds of lipids are found in cell membranes? Phospholipids, Glycolipids, and Cholesterol
What are the products of the saponification of a fat? Glycerol and 3 salts of fatty acids
Cholesterol is used to synthesize what three types of compounds? Steroid hormones, vitamin D and bile salts
What general structural feature do phosphatides share with soaps? Ionic end (hydrophilic)
What structural feature is found in most prostaglandins? 5 carbon ring
What functional group is found in a saponifiable lipid which is NOT found in a nonsaponifiable lipid? Ester linkage
The lack of an enzyme to metabolize glycolipids may cause what diseases? Niemann-Pick, Gauchers, and Tay-Sachs
What functions does fat serve in the body? Energy, insulation, and protection
Can a wax be converted into a soap? Yes but difficult
What are the differences between a fat and an oil? Fat is a saturated fatty acid and oil is an unsaturated fatty acid
Why do unsaturated fatty acids have lower melting points than saturated fatty acids? they have cis double bonds and do not stack well
How do the products of the acid hydrolysis and base hydrolysis of fat differ? Acid hydrolysis = fatty acids and Base hydrolysis = salts of fatty acids
Why does coconut oil (a vegetable oil) have a melting point similar to fats from animal sources? it has very few double bonds
Glycerol backbone -Phospholipids -Fats -Glycolipids
Sponifiable -Wax -Triglyceride -Phosphotriglyceride -glycolipid -Oil
Hydrophilic End -Phospholipids -Cephalin -Lecithin -Soap
Lipids found in cell membranes -Phospholipids -Glycolipids -Cholesterol
Cholesterol synthesizes what 3 compounds? -Biles Salts -Vit D - Steroid Hormone
Created by: JadeaGuldan
 

 



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